since location matters (we have no idea where you are) and local resources matter- it's pretty hard to tell what it costs to have a machine serviced---and of course it depends on what broke! regular service- cleaning/tune up's run anywhere from about $40 right on up- depending on what machine it is- and what service shop you take it to- as for repairs...only the service person can tell you- if you contact a local shop/dealer they will tell you how much they charge for service and if you go in they will probably give you an estimate on what the price of 'fixing' will be. if you love the machine it is worth fixing, if the service person says it's 'fixable'. they can answer that question for you. as for the long-arm....they are big- you need room for a 10-12 foot table, the machine, ability to walk around the table- and they are fairly expensive- visit either a show, dealer or website for long arms and check out the size/foot print (amount of space it takes up) and the variety of price ranges- long arms like everything else range in price form *moderate - $10,000 on up to $40,000+ * depending on the set up, the options, lots of variables- it is possible to find them used at times- again, depends on where you are & what is available.